Hearing aid



1. Hearing aid

Fig. 1.1 is a front view;

Fig. 1.2 is a side view;

Fig. 1.3 is a back view;

Fig. 1.4 is a top view;

Fig. 1.5 is a bottom view;

Fig. 1.6 is a side view;

Fig. 1.7 is a perspective view; and

Fig. 1.8 is another perspective view.

The portions of the design shown in the color red are for the purpose of illustrating environment only and form no part of the claimed design. Also, the color of the figures forms no part of the claimed design. 

CLAIM The ornamental design for a hearing aid, as shown and described. 